Truncate super long SQL in DB error log lines (useful for blobs)

Change-Id: Ibb9b9178de80e691406e5c1a7113f0511055d18d

diff --git a/includes/db/Database.php b/includes/db/Database.php
index 9ba1851..f70934b 100644 (file)
--- a/includes/db/Database.php
+++ b/includes/db/Database.php
@@ -1105,7 +1105,7 @@ abstract class DatabaseBase implements IDatabase, DatabaseType {
                        wfDebug( "SQL ERROR (ignored): $error\n" );
                        $this->ignoreErrors( $ignore );
                } else {
-                       $sql1line = str_replace( "\n", "\\n", $sql );
+                       $sql1line = mb_substr( str_replace( "\n", "\\n", $sql ), 0, 5*1024 );
                        wfLogDBError( "$fname\t{$this->mServer}\t$errno\t$error\t$sql1line\n" );
                        wfDebug( "SQL ERROR: " . $error . "\n" );
                        throw new DBQueryError( $this, $error, $errno, $sql, $fname );